公开(公告)号：WO2021148285A1

公开(公告)日：2021-07-29

申请号：PCT/EP2021/050570

申请日：2021-01-13

Applicant: BASF SE

Inventor： OLBERT, Gerhard ,  PASIN E MATOS, Laila, Raquel ,  HELWIG, Ekaterina

IPC: C03B19/10 ,  C03C11/00 ,  C03C3/083 ,  C03B19/1075 ,  C03C11/002

Abstract: Process for the preparation of hollow spherical glass particles comprising at least SiO2, Al2O3, and an alkali metal oxide, wherein the process comprises the preparation of precursor particles comprising at least SiO2, Al2O3, and an alkali metal oxide by mixing the starting materials, slurrying the starting materials with water followed by spry-drying and heat-treating the obtained precursor-particles at a temperature from 1000°C to 1800°C, preferably from 1300°C to 1600°C by contacting the precursor particles with at least one naked flame.

公开(公告)号：EP4093709A1

公开(公告)日：2022-11-30

申请号：EP21701677.3

申请日：2021-01-13

Applicant: BASF SE

Inventor： OLBERT, Gerhard ,  PASIN E MATOS, Laila, Raquel ,  HELWIG, Ekaterina

IPC: C03B19/10 ,  C03C11/00 ,  C03C3/083